International regimes reduce uncertainties and provide a reference for which behaviors are false or right. In other words, regimes facilitate the identification of violations of rules in social, political and security related fields. Moreover, they also reduce the cost of common effort for those responding to such violations. According to Krasner, regimes make it easier to reach an agreement for parties, since it increases the communication among sides and influence the quality and quantity of knowledge in a positive manner. Therefore, the correct option is E.